SN54ALS113A, SN74ALS113A
DUAL J-K NEGATIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH PRESET
SDAS200 – D2661, APRIL 1982 – REVISED MAY 1986
• Fully Buffered to Offer Maximum isolation
SN54ALS113A . . . J PACKAGE
SN74ALS113A . . . D OR N PACKAGE
from External Disturbance
(TOP VIEW)
• Package Options Include Plastic Small
Outline Packages, Ceramic Chip Carriers,
and Standard Plastic and Ceramic 300-mil
DIPs
V
1
2
3
4
5
6
7
14
13
12
11
10
9
1 CLK
1K
1J
1PRE
1Q
CC
2CLK
2K
2J
2PRE
2Q
• Dependable Texas Instruments Quality and
Reliability
1Q
GND
TYPICAL POWER
DISSIPATION
PER FLIP-FLOP
TYPICAL MAXIMUM
CLOCK FREQUENCY
TYPE
2Q
8
’ALS113A
40 MHz (C =15 pF)
6 mW
L
SN54ALS113A . . . FK PACKAGE
(TOP VIEW)
description
These devices contain two independent J-K
negative-edge-triggered flip-flops. A low level at
the Preset input sets the outputs regardless of the
levels of the other inputs. When Preset PRE is
inactive (high), data at the J and K inputs meeting
the setup time requirements are transferred to the
outputs on the negative-going edge of the clock
pulse. Clock triggering occurs at a voltage level
and is not directly related to the fall time of the
clock pulse. Following the hold time interval, data
at the J and K inputs may be changed without
affecting the levels at the outputs. These versatile
flip-flops can perform as toggle flip-flops by tying
J and K high.
3
2
1
20 19
18
2K
1J
NC
4
5
6
7
8
NC
2J
17
16
15
14
1PRE
NC
NC
2PRE
1Q
9 10 11 12 13
NC–No internal connection
†
logic symbol
The SN54ALS113A is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74ALS113A is characterized for
operation from 0°C to 70°C.
4
3
S
1PRE
1J
5
1Q
1J
1
2
C1
1K
1CLK
1K
FUNCTION TABLE
6
9
8
1Q
2Q
2Q
INPUTS
OUTPUTS
10
PRE
L
CLK
J
X
L
K
X
L
Q
Q
2PRE
2J
X
↓
H
L
11
13
H
Q
Q
0
0
2CLK
2K
H
↓
H
L
L
H
L
12
H
↓
H
H
X
L
H
H
↓
H
X
TOGGLE
H
H
Q
Q
0
0
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and
IEC Publication 617-12.
Pin numbers shown are for D, J, and N packages.
Copyright 1986, Texas Instruments Incorporated
5BASIC
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265